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Copyright 1949, NATIONAL BISCUIT COMPANY Book One NABISCO SHREDDED WHEAT

STRAIGHT ARROW

WATER SIGNALS
[[image]] 
DEEP OR DANGEROUS WATER 
[[image]] Three wavey and equally spaced lines carved or drawn on a tree or rock means "The nearby water is dangerous."

[[image]]  A CROSSING OR FORD
A wavy line with 3 straight lines means that with normal conditions the nearby water may be forded. 

[[image]] GOOD DRINKING WATER
Place your water signals where they may be plainly seen.

Card No. 21..in a series of 36 STRAIGHT ARROW INJUN-UITIES

Transcription Notes:
Instructions include not to describe the images